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Add AP to control TabControl Headers behavior #3873

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6 changes: 4 additions & 2 deletions src/MainDemo.Wpf/Domain/TabsViewModel.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -4,10 +4,10 @@

namespace MaterialDesignDemo.Domain;

internal class TabsViewModel : ViewModelBase
internal partial class TabsViewModel : ObservableObject
{
public ObservableCollection<CustomTab> CustomTabs { get; }

public List<int> LongList { get; }
public CustomTab? SelectedTab { get; set; }

public string? VeryLongText { get; set; } = @"
Expand Down Expand Up @@ -47,6 +47,8 @@ public TabsViewModel()
CustomContent = "Custom content 3",
},
};

LongList = Enumerable.Range(1, 20).ToList();
}

}
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82 changes: 82 additions & 0 deletions src/MainDemo.Wpf/Tabs.xaml
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Original file line number Diff line number Diff line change
Expand Up @@ -755,5 +755,87 @@
</materialDesign:Card>
</smtx:XamlDisplay>

<Border Width="720"
BorderBrush="{DynamicResource MaterialDesign.Brush.Primary}"
BorderThickness="1">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" MinWidth="50" />
<ColumnDefinition Width="2" />
<ColumnDefinition Width="*" MinWidth="50" />
</Grid.ColumnDefinitions>

<materialDesign:ColorZone Grid.ColumnSpan="2"
Padding="8"
Mode="PrimaryMid">
<TextBlock Text="materialDesign:TabAssist.HeaderBehavior=&quot;Scrolling&quot;" />
</materialDesign:ColorZone>

<materialDesign:ColorZone Grid.Column="2"
Padding="8"
Mode="PrimaryMid">
<TextBlock Text="materialDesign:TabAssist.HeaderBehavior=&quot;Wrapping&quot;" />
</materialDesign:ColorZone>

<smtx:XamlDisplay Grid.Row="1"
Grid.Column="0"
Margin="16"
UniqueKey="tabs_tabAssist_1">
<TabControl materialDesign:TabAssist.HeaderBehavior="Scrolling"
ItemsSource="{Binding LongList}"
Style="{StaticResource MaterialDesignTabControl}">
<TabControl.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding ., StringFormat=Header {0}}" />
</StackPanel>
</DataTemplate>
</TabControl.ItemTemplate>
<TabControl.ContentTemplate>
<DataTemplate>
<TextBlock Margin="10"
FontSize="18"
Text="{Binding ., StringFormat=Content {0}}" />
</DataTemplate>
</TabControl.ContentTemplate>
</TabControl>
</smtx:XamlDisplay>

<GridSplitter Grid.RowSpan="2"
Grid.Column="1"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch" />

<smtx:XamlDisplay Grid.Row="1"
Grid.Column="2"
Margin="16"
UniqueKey="tabs_tabAssist_2">
<TabControl materialDesign:TabAssist.HeaderBehavior="Wrapping"
ItemsSource="{Binding LongList}"
Style="{StaticResource MaterialDesignTabControl}">
<TabControl.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding ., StringFormat=Header {0}}" />
</StackPanel>
</DataTemplate>
</TabControl.ItemTemplate>
<TabControl.ContentTemplate>
<DataTemplate>
<TextBlock Margin="10"
FontSize="18"
Text="{Binding ., StringFormat=Content {0}}" />
</DataTemplate>
</TabControl.ContentTemplate>
</TabControl>
</smtx:XamlDisplay>

</Grid>
</Border>

</StackPanel>
</UserControl>
18 changes: 17 additions & 1 deletion src/MaterialDesignThemes.Wpf/TabAssist.cs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,11 @@
namespace MaterialDesignThemes.Wpf;

public enum TabControlHeaderBehavior
{
Scrolling,
Wrapping
}

public static class TabAssist
{
public static readonly DependencyProperty HasFilledTabProperty = DependencyProperty.RegisterAttached(
Expand Down Expand Up @@ -27,7 +33,7 @@ public static void SetHeaderPanelMargin(DependencyObject element, Thickness valu
=> element.SetValue(HeaderPanelMarginProperty, value);

public static Thickness GetHeaderPanelMargin(DependencyObject element)
=> (Thickness) element.GetValue(HeaderPanelMarginProperty);
=> (Thickness)element.GetValue(HeaderPanelMarginProperty);

internal static Visibility GetBindableIsItemsHost(DependencyObject obj)
=> (Visibility)obj.GetValue(BindableIsItemsHostProperty);
Expand All @@ -45,4 +51,14 @@ private static void OnBindableIsItemsHostChanged(DependencyObject d, DependencyP
panel.IsItemsHost = (Visibility)e.NewValue == Visibility.Visible;
}
}

public static TabControlHeaderBehavior GetHeaderBehavior(DependencyObject obj)
=> (TabControlHeaderBehavior)obj.GetValue(HeaderBehaviorProperty);

public static void SetHeaderBehavior(DependencyObject obj, TabControlHeaderBehavior value)
=> obj.SetValue(HeaderBehaviorProperty, value);

public static readonly DependencyProperty HeaderBehaviorProperty =
DependencyProperty.RegisterAttached("HeaderBehavior", typeof(TabControlHeaderBehavior), typeof(TabAssist),
new PropertyMetadata(TabControlHeaderBehavior.Scrolling));
}
82 changes: 54 additions & 28 deletions src/MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.TabControl.xaml
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Original file line number Diff line number Diff line change
Expand Up @@ -31,57 +31,83 @@
<ControlTemplate TargetType="{x:Type TabControl}">
<DockPanel KeyboardNavigation.TabNavigation="Local">
<wpf:ColorZone x:Name="PART_HeaderZone"
VerticalAlignment="Stretch"
Panel.ZIndex="1"
wpf:ElevationAssist.Elevation="{TemplateBinding wpf:ElevationAssist.Elevation}"
Background="{TemplateBinding wpf:ColorZoneAssist.Background}"
DockPanel.Dock="Top"
Focusable="False">
<ScrollViewer wpf:ScrollViewerAssist.BubbleVerticalScroll="True"
wpf:ScrollViewerAssist.SupportHorizontalScroll="True"
VerticalAlignment="Stretch"
Panel.ZIndex="1"
wpf:ElevationAssist.Elevation="{TemplateBinding wpf:ElevationAssist.Elevation}"
Background="{TemplateBinding wpf:ColorZoneAssist.Background}"
DockPanel.Dock="Top"
Focusable="False">
<Grid>
<!-- Scrollable headers -->
<ScrollViewer x:Name="PART_HeaderScrollViewer"
wpf:ScrollViewerAssist.BubbleVerticalScroll="True"
wpf:ScrollViewerAssist.IgnorePadding="{Binding Path=(wpf:ScrollViewerAssist.IgnorePadding), RelativeSource={RelativeSource TemplatedParent}}"
wpf:ScrollViewerAssist.PaddingMode="{Binding Path=(wpf:ScrollViewerAssist.PaddingMode), RelativeSource={RelativeSource TemplatedParent}}"
wpf:ScrollViewerAssist.SupportHorizontalScroll="True"
HorizontalScrollBarVisibility="Hidden"
VerticalScrollBarVisibility="Hidden">
<StackPanel>
<UniformGrid x:Name="CenteredHeaderPanel"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
<StackPanel>
<UniformGrid x:Name="CenteredHeaderPanel"
Margin="{Binding Path=(wpf:TabAssist.HeaderPanelMargin), RelativeSource={RelativeSource TemplatedParent}}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
wpf:TabAssist.BindableIsItemsHost="{Binding Visibility, RelativeSource={RelativeSource Self}}"
Focusable="False"
KeyboardNavigation.TabIndex="1"
Rows="1" />
<VirtualizingStackPanel x:Name="HeaderPanel"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
<VirtualizingStackPanel x:Name="HeaderPanel"
Margin="{Binding Path=(wpf:TabAssist.HeaderPanelMargin), RelativeSource={RelativeSource TemplatedParent}}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
wpf:TabAssist.BindableIsItemsHost="{Binding Visibility, RelativeSource={RelativeSource Self}}"
Focusable="False"
KeyboardNavigation.TabIndex="1"
Orientation="Horizontal" />
</StackPanel>
</ScrollViewer>
</StackPanel>
</ScrollViewer>

<!-- Wrapping headers -->
<ScrollViewer x:Name="PART_HeaderWrapScrollViewer"
HorizontalScrollBarVisibility="Disabled"
VerticalScrollBarVisibility="Auto"
Visibility="Collapsed">
<WrapPanel x:Name="HeaderWrapPanel"
Margin="{Binding Path=(wpf:TabAssist.HeaderPanelMargin), RelativeSource={RelativeSource TemplatedParent}}"
Background="Transparent"
IsItemsHost="True"
KeyboardNavigation.TabIndex="1" />
</ScrollViewer>
</Grid>
</wpf:ColorZone>
<Border x:Name="PART_BorderSelectedContent"
Padding="{TemplateBinding Padding}"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Panel.ZIndex="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=(Panel.ZIndex)}"
Background="{x:Null}"
Focusable="False">
Padding="{TemplateBinding Padding}"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Panel.ZIndex="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=(Panel.ZIndex)}"
Background="{x:Null}"
Focusable="False">
<ContentPresenter x:Name="PART_SelectedContentHost"
Margin="{TemplateBinding Padding}"
ContentSource="SelectedContent"
ContentStringFormat="{TemplateBinding SelectedContentStringFormat}"
ContentTemplate="{TemplateBinding SelectedContentTemplate}"
ContentTemplateSelector="{TemplateBinding SelectedContentTemplateSelector}"
Focusable="False"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
Margin="{TemplateBinding Padding}"
ContentSource="SelectedContent"
ContentStringFormat="{TemplateBinding SelectedContentStringFormat}"
ContentTemplate="{TemplateBinding SelectedContentTemplate}"
ContentTemplateSelector="{TemplateBinding SelectedContentTemplateSelector}"
Focusable="False"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
</Border>
</DockPanel>

<ControlTemplate.Triggers>

<Trigger Property="wpf:TabAssist.HeaderBehavior" Value="Scrolling">
<Setter TargetName="PART_HeaderScrollViewer" Property="Visibility" Value="Visible"/>
<Setter TargetName="PART_HeaderWrapScrollViewer" Property="Visibility" Value="Collapsed"/>
</Trigger>
<Trigger Property="wpf:TabAssist.HeaderBehavior" Value="Wrapping">
<Setter TargetName="PART_HeaderScrollViewer" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="PART_HeaderWrapScrollViewer" Property="Visibility" Value="Visible"/>
</Trigger>

<Trigger Property="HorizontalContentAlignment" Value="Stretch">
<Setter TargetName="CenteredHeaderPanel" Property="Visibility" Value="Visible" />
<Setter TargetName="HeaderPanel" Property="Visibility" Value="Collapsed" />
Expand Down
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